28692920 has 16 divisors (see below), whose sum is σ = 64559160. Its totient is φ = 11477152.

The previous prime is 28692901. The next prime is 28692929. The reversal of 28692920 is 2929682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28692929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358622 + ... + 358701.

Almost surely, 2^28692920 is an apocalyptic number.

28692920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28692920 is an abundant number, since it is smaller than the sum of its proper divisors (35866240).

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

28692920 is a wasteful number, since it uses less digits than its factorization.

28692920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717334 (or 717330 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 28692920 is about 5356.5772653813. The cubic root of 28692920 is about 306.1434103585.

The spelling of 28692920 in words is "twenty-eight million, six hundred ninety-two thousand, nine hundred twenty".