40007070 has 24 divisors (see below), whose sum is σ = 104018616. Its totient is φ = 10668528.

The previous prime is 40007063. The next prime is 40007083. The reversal of 40007070 is 7070004.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222172 + ... + 222351.

It is an arithmetic number, because the mean of its divisors is an integer number (4334109).

Almost surely, 2^40007070 is an apocalyptic number.

40007070 is an abundant number, since it is smaller than the sum of its proper divisors (64011546).

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

40007070 is a wasteful number, since it uses less digits than its factorization.

40007070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444536 (or 444533 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 40007070 is about 6325.1142282175. The cubic root of 40007070 is about 342.0153373649.

Adding to 40007070 its reverse (7070004), we get a palindrome (47077074).

The spelling of 40007070 in words is "forty million, seven thousand, seventy".