70423770 has 32 divisors (see below), whose sum is σ = 169906752. Its totient is φ = 18680832.

The previous prime is 70423751. The next prime is 70423781. The reversal of 70423770 is 7732407.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292 + ... + 11871.

It is an arithmetic number, because the mean of its divisors is an integer number (5309586).

Almost surely, 2^70423770 is an apocalyptic number.

70423770 is an abundant number, since it is smaller than the sum of its proper divisors (99482982).

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

70423770 is a wasteful number, since it uses less digits than its factorization.

70423770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12366.

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

The square root of 70423770 is about 8391.8871536741. The cubic root of 70423770 is about 412.9585131092.

The spelling of 70423770 in words is "seventy million, four hundred twenty-three thousand, seven hundred seventy".