70923840 has 112 divisors (see below), whose sum is σ = 242547648. Its totient is φ = 17455104.

The previous prime is 70923829. The next prime is 70923859. The reversal of 70923840 is 4832907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9639 + ... + 15321.

It is an arithmetic number, because the mean of its divisors is an integer number (2165604).

Almost surely, 2^70923840 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 70923840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121273824).

70923840 is an abundant number, since it is smaller than the sum of its proper divisors (171623808).

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

70923840 is a wasteful number, since it uses less digits than its factorization.

70923840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5716 (or 5706 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 70923840 is about 8421.6292960448. The cubic root of 70923840 is about 413.9336634360.

The spelling of 70923840 in words is "seventy million, nine hundred twenty-three thousand, eight hundred forty".