40070478 has 32 divisors (see below), whose sum is σ = 92411136. Its totient is φ = 11346048.

The previous prime is 40070477. The next prime is 40070521. The reversal of 40070478 is 87407004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40070477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525 + ... + 8967.

It is an arithmetic number, because the mean of its divisors is an integer number (2887848).

Almost surely, 2^40070478 is an apocalyptic number.

40070478 is an abundant number, since it is smaller than the sum of its proper divisors (52340658).

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

40070478 is a wasteful number, since it uses less digits than its factorization.

40070478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8568.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 40070478 is about 6330.1246433226. The cubic root of 40070478 is about 342.1959309572.

The spelling of 40070478 in words is "forty million, seventy thousand, four hundred seventy-eight".