28607478 has 16 divisors (see below), whose sum is σ = 57567936. Its totient is φ = 9477000.

The previous prime is 28607477. The next prime is 28607479. The reversal of 28607478 is 87470682.

It is an interprime number because it is at equal distance from previous prime (28607477) and next prime (28607479).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28607471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13648 + ... + 15603.

It is an arithmetic number, because the mean of its divisors is an integer number (3597996).

Almost surely, 2^28607478 is an apocalyptic number.

28607478 is an abundant number, since it is smaller than the sum of its proper divisors (28960458).

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

28607478 is a wasteful number, since it uses less digits than its factorization.

28607478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29419.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 28607478 is about 5348.5958905118. The cubic root of 28607478 is about 305.8392294860.

The spelling of 28607478 in words is "twenty-eight million, six hundred seven thousand, four hundred seventy-eight".