20389962 has 8 divisors (see below), whose sum is σ = 40779936. Its totient is φ = 6796652.

The previous prime is 20389951. The next prime is 20389991. The reversal of 20389962 is 26998302.

It is a sphenic number, since it is the product of 3 distinct primes.

20389962 is an admirable number.

It is a super-2 number, since 2×20389962² = 831501100722888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20389962.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1699158 + ... + 1699169.

It is an arithmetic number, because the mean of its divisors is an integer number (5097492).

Almost surely, 2^20389962 is an apocalyptic number.

20389962 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20389962 is a wasteful number, since it uses less digits than its factorization.

20389962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398332.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 20389962 is about 4515.5245542462. The cubic root of 20389962 is about 273.1946176306.

The spelling of 20389962 in words is "twenty million, three hundred eighty-nine thousand, nine hundred sixty-two".