70578816 has 288 divisors, whose sum is σ = 247443840. Its totient is φ = 17740800.

The previous prime is 70578811. The next prime is 70578829. The reversal of 70578816 is 61887507.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (70578811) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2276721 + ... + 2276751.

It is an arithmetic number, because the mean of its divisors is an integer number (859180).

Almost surely, 2^70578816 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 70578816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123721920).

70578816 is an abundant number, since it is smaller than the sum of its proper divisors (176865024).

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

70578816 is a wasteful number, since it uses less digits than its factorization.

70578816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 70578816 is about 8401.1199253433. The cubic root of 70578816 is about 413.2613494716.

The spelling of 70578816 in words is "seventy million, five hundred seventy-eight thousand, eight hundred sixteen".