70731120 has 80 divisors (see below), whose sum is σ = 220557312. Its totient is φ = 18750720.

The previous prime is 70731113. The next prime is 70731127. The reversal of 70731120 is 2113707.

It is an interprime number because it is at equal distance from previous prime (70731113) and next prime (70731127).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70731127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45069 + ... + 46611.

Almost surely, 2^70731120 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 70731120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110278656).

70731120 is an abundant number, since it is smaller than the sum of its proper divisors (149826192).

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

70731120 is a wasteful number, since it uses less digits than its factorization.

70731120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750 (or 1744 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 70731120 is about 8410.1795462404. The cubic root of 70731120 is about 413.5583986431.

Adding to 70731120 its reverse (2113707), we get a palindrome (72844827).

The spelling of 70731120 in words is "seventy million, seven hundred thirty-one thousand, one hundred twenty".