70438172 has 24 divisors (see below), whose sum is σ = 142982784. Its totient is φ = 29736432.

The previous prime is 70438133. The next prime is 70438183. The reversal of 70438172 is 27183407.

It is a happy number.

It is a congruent number.

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, 16898 + ... + 20649.

It is an arithmetic number, because the mean of its divisors is an integer number (5957616).

Almost surely, 2^70438172 is an apocalyptic number.

It is an amenable number.

70438172 is an abundant number, since it is smaller than the sum of its proper divisors (72544612).

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

70438172 is a wasteful number, since it uses less digits than its factorization.

70438172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37625 (or 37623 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 70438172 is about 8392.7452004693. The cubic root of 70438172 is about 412.9866618584.

The spelling of 70438172 in words is "seventy million, four hundred thirty-eight thousand, one hundred seventy-two".