70399328 has 12 divisors (see below), whose sum is σ = 138598740. Its totient is φ = 35199648.

The previous prime is 70399321. The next prime is 70399333. The reversal of 70399328 is 82399307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70399321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099958 + ... + 1100021.

It is an arithmetic number, because the mean of its divisors is an integer number (11549895).

Almost surely, 2^70399328 is an apocalyptic number.

It is an amenable number.

70399328 is a deficient number, since it is larger than the sum of its proper divisors (68199412).

70399328 is a wasteful number, since it uses less digits than its factorization.

70399328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199989 (or 2199981 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 70399328 is about 8390.4307398369. The cubic root of 70399328 is about 412.9107323673.

The spelling of 70399328 in words is "seventy million, three hundred ninety-nine thousand, three hundred twenty-eight".