40078472 has 24 divisors (see below), whose sum is σ = 87416910. Its totient is φ = 17176320.

The previous prime is 40078471. The next prime is 40078481. The reversal of 40078472 is 27487004.

It can be written as a sum of positive squares in only one way, i.e., 31516996 + 8561476 = 5614^2 + 2926^2 .

It is not an unprimeable number, because it can be changed into a prime (40078471) 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, 50729 + ... + 51512.

Almost surely, 2^40078472 is an apocalyptic number.

It is an amenable number.

40078472 is an abundant number, since it is smaller than the sum of its proper divisors (47338438).

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

40078472 is a wasteful number, since it uses less digits than its factorization.

40078472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102261 (or 102250 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 40078472 is about 6330.7560369991. The cubic root of 40078472 is about 342.2186853017.

The spelling of 40078472 in words is "forty million, seventy-eight thousand, four hundred seventy-two".