70507872 has 72 divisors (see below), whose sum is σ = 202083336. Its totient is φ = 23318016.

The previous prime is 70507837. The next prime is 70507883. The reversal of 70507872 is 27870507.

70507872 is a `hidden beast` number, since 70 + 507 + 87 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 38563 + ... + 40349.

It is an arithmetic number, because the mean of its divisors is an integer number (2806713).

Almost surely, 2^70507872 is an apocalyptic number.

70507872 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70507872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101041668).

70507872 is an abundant number, since it is smaller than the sum of its proper divisors (131575464).

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

70507872 is a wasteful number, since it uses less digits than its factorization.

70507872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940 (or 1929 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

The square root of 70507872 is about 8396.8965695666. The cubic root of 70507872 is about 413.1228365121.

The spelling of 70507872 in words is "seventy million, five hundred seven thousand, eight hundred seventy-two".