28969072 has 40 divisors (see below), whose sum is σ = 64460160. Its totient is φ = 12473280.

The previous prime is 28969069. The next prime is 28969103. The reversal of 28969072 is 27096982.

It is a happy number.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988 + ... + 7675.

It is an arithmetic number, because the mean of its divisors is an integer number (1611504).

Almost surely, 2^28969072 is an apocalyptic number.

28969072 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28969072 is an abundant number, since it is smaller than the sum of its proper divisors (35491088).

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

28969072 is a wasteful number, since it uses less digits than its factorization.

28969072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8701 (or 8695 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 28969072 is about 5382.2924483904. The cubic root of 28969072 is about 307.1224246213.

The spelling of 28969072 in words is "twenty-eight million, nine hundred sixty-nine thousand, seventy-two".