70428924 has 18 divisors (see below), whose sum is σ = 178028760. Its totient is φ = 23476296.

The previous prime is 70428923. The next prime is 70428929. The reversal of 70428924 is 42982407.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1956359 = 70428924 / (7 + 0 + 4 + 2 + 8 + 9 + 2 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70428923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 978144 + ... + 978215.

Almost surely, 2^70428924 is an apocalyptic number.

It is an amenable number.

70428924 is an abundant number, since it is smaller than the sum of its proper divisors (107599836).

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

70428924 is a wasteful number, since it uses less digits than its factorization.

70428924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956369 (or 1956364 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 70428924 is about 8392.1942303548. The cubic root of 70428924 is about 412.9685870575.

The spelling of 70428924 in words is "seventy million, four hundred twenty-eight thousand, nine hundred twenty-four".