70037440 has 112 divisors (see below), whose sum is σ = 184672224. Its totient is φ = 25088000.

The previous prime is 70037437. The next prime is 70037449. The reversal of 70037440 is 4473007.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70037449) 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, 355422 + ... + 355618.

Almost surely, 2^70037440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70037440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92336112).

70037440 is an abundant number, since it is smaller than the sum of its proper divisors (114634784).

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

70037440 is a wasteful number, since it uses less digits than its factorization.

70037440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 70037440 is about 8368.8374341960. The cubic root of 70037440 is about 412.2019935143.

The spelling of 70037440 in words is "seventy million, thirty-seven thousand, four hundred forty".