70491240 has 48 divisors (see below), whose sum is σ = 229097700. Its totient is φ = 18797568.

The previous prime is 70491229. The next prime is 70491247. The reversal of 70491240 is 4219407.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67272804 + 3218436 = 8202^2 + 1794^2 .

It is not an unprimeable number, because it can be changed into a prime (70491247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97545 + ... + 98264.

Almost surely, 2^70491240 is an apocalyptic number.

It is an amenable number.

70491240 is an abundant number, since it is smaller than the sum of its proper divisors (158606460).

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

70491240 is a wasteful number, since it uses less digits than its factorization.

70491240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195826 (or 195819 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 70491240 is about 8395.9061452591. The cubic root of 70491240 is about 413.0903503081.

The spelling of 70491240 in words is "seventy million, four hundred ninety-one thousand, two hundred forty".