290021298 has 48 divisors (see below), whose sum is σ = 681493824. Its totient is φ = 82034400.

The previous prime is 290021279. The next prime is 290021299. The reversal of 290021298 is 892120092.

It is a happy number.

It is a super-2 number, since 2×290021298² = 168224706587209608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290021299) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24811 + ... + 34577.

It is an arithmetic number, because the mean of its divisors is an integer number (14197788).

Almost surely, 2^290021298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290021298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340746912).

290021298 is an abundant number, since it is smaller than the sum of its proper divisors (391472526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

290021298 is a wasteful number, since it uses less digits than its factorization.

290021298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9887 (or 9880 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 290021298 is about 17030.0116852573. The cubic root of 290021298 is about 661.9267982816.

The spelling of 290021298 in words is "two hundred ninety million, twenty-one thousand, two hundred ninety-eight".