70388420 has 24 divisors (see below), whose sum is σ = 151255104. Its totient is φ = 27500256.

The previous prime is 70388419. The next prime is 70388429. The reversal of 70388420 is 2488307.

It is not an unprimeable number, because it can be changed into a prime (70388429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40064 + ... + 41783.

It is an arithmetic number, because the mean of its divisors is an integer number (6302296).

Almost surely, 2^70388420 is an apocalyptic number.

It is an amenable number.

70388420 is an abundant number, since it is smaller than the sum of its proper divisors (80866684).

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

70388420 is a wasteful number, since it uses less digits than its factorization.

70388420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81899 (or 81897 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 70388420 is about 8389.7806884328. The cubic root of 70388420 is about 412.8894051613.

The spelling of 70388420 in words is "seventy million, three hundred eighty-eight thousand, four hundred twenty".