70372740 has 48 divisors (see below), whose sum is σ = 197765568. Its totient is φ = 18697344.

The previous prime is 70372733. The next prime is 70372747. The reversal of 70372740 is 4727307.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (70372733) and next prime (70372747).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 70372698 and 70372707.

It is not an unprimeable number, because it can be changed into a prime (70372747) 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 15 ways as a sum of consecutive naturals, for example, 15579 + ... + 19581.

It is an arithmetic number, because the mean of its divisors is an integer number (4120116).

Almost surely, 2^70372740 is an apocalyptic number.

It is an amenable number.

70372740 is an abundant number, since it is smaller than the sum of its proper divisors (127392828).

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

70372740 is a wasteful number, since it uses less digits than its factorization.

70372740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4308 (or 4306 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 30.

The square root of 70372740 is about 8388.8461661900. The cubic root of 70372740 is about 412.8587439310.

The spelling of 70372740 in words is "seventy million, three hundred seventy-two thousand, seven hundred forty".