70913240 has 32 divisors (see below), whose sum is σ = 159971760. Its totient is φ = 28291200.

The previous prime is 70913233. The next prime is 70913243. The reversal of 70913240 is 4231907.

It is a Cunningham number, because it is equal to 8421²-1.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70913243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14735 + ... + 18945.

Almost surely, 2^70913240 is an apocalyptic number.

It is an amenable number.

70913240 is an abundant number, since it is smaller than the sum of its proper divisors (89058520).

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

70913240 is a wasteful number, since it uses less digits than its factorization.

70913240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643 (or 4639 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 70913240 is about 8420.9999406246. Note that the first 4 decimals coincide. The cubic root of 70913240 is about 413.9130407726.

The spelling of 70913240 in words is "seventy million, nine hundred thirteen thousand, two hundred forty".