40157028 has 36 divisors (see below), whose sum is σ = 104785408. Its totient is φ = 12953520.

The previous prime is 40157027. The next prime is 40157063. The reversal of 40157028 is 82075104.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×40157028² = 3225173795585568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40156992 and 40157010.

It is not an unprimeable number, because it can be changed into a prime (40157023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16876 + ... + 19107.

Almost surely, 2^40157028 is an apocalyptic number.

It is an amenable number.

40157028 is an abundant number, since it is smaller than the sum of its proper divisors (64628380).

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

40157028 is a wasteful number, since it uses less digits than its factorization.

40157028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36024 (or 36019 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 40157028 is about 6336.9573140428. The cubic root of 40157028 is about 342.4421284998.

The spelling of 40157028 in words is "forty million, one hundred fifty-seven thousand, twenty-eight".