40978152 has 24 divisors (see below), whose sum is σ = 110982690. Its totient is φ = 13659360.

The previous prime is 40978151. The next prime is 40978159. The reversal of 40978152 is 25187904.

It can be written as a sum of positive squares in only one way, i.e., 21846276 + 19131876 = 4674^2 + 4374^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40978151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 284499 + ... + 284642.

Almost surely, 2^40978152 is an apocalyptic number.

It is an amenable number.

40978152 is an abundant number, since it is smaller than the sum of its proper divisors (70004538).

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

40978152 is a wasteful number, since it uses less digits than its factorization.

40978152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569153 (or 569146 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 40978152 is about 6401.4179679193. The cubic root of 40978152 is about 344.7604638464.

The spelling of 40978152 in words is "forty million, nine hundred seventy-eight thousand, one hundred fifty-two".