70538144 has 48 divisors (see below), whose sum is σ = 144458496. Its totient is φ = 33868800.

The previous prime is 70538123. The next prime is 70538159. The reversal of 70538144 is 44183507.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 70538144.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209144 + ... + 209480.

It is an arithmetic number, because the mean of its divisors is an integer number (3009552).

Almost surely, 2^70538144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70538144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72229248).

70538144 is an abundant number, since it is smaller than the sum of its proper divisors (73920352).

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

70538144 is a wasteful number, since it uses less digits than its factorization.

70538144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 581 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 70538144 is about 8398.6989468608. The cubic root of 70538144 is about 413.1819517324.

The spelling of 70538144 in words is "seventy million, five hundred thirty-eight thousand, one hundred forty-four".