28577742 has 8 divisors (see below), whose sum is σ = 57155496. Its totient is φ = 9525912.

The previous prime is 28577723. The next prime is 28577761. The reversal of 28577742 is 24777582.

It is an interprime number because it is at equal distance from previous prime (28577723) and next prime (28577761).

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

28577742 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28577694 and 28577703.

It is a congruent number.

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, 2381473 + ... + 2381484.

It is an arithmetic number, because the mean of its divisors is an integer number (7144437).

Almost surely, 2^28577742 is an apocalyptic number.

28577742 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.

28577742 is a wasteful number, since it uses less digits than its factorization.

28577742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4762962.

The product of its digits is 219520, while the sum is 42.

The square root of 28577742 is about 5345.8153727939. The cubic root of 28577742 is about 305.7332247063.

The spelling of 28577742 in words is "twenty-eight million, five hundred seventy-seven thousand, seven hundred forty-two".