1070397720 has 128 divisors (see below), whose sum is σ = 4077734400. Its totient is φ = 244660608.

The previous prime is 1070397709. The next prime is 1070397773. The reversal of 1070397720 is 277930701.

It is a super-2 number, since 2×1070397720² = 2291502557962396800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63234 + ... + 78353.

It is an arithmetic number, because the mean of its divisors is an integer number (31857300).

Almost surely, 2^1070397720 is an apocalyptic number.

1070397720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1070397720 is an abundant number, since it is smaller than the sum of its proper divisors (3007336680).

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

1070397720 is a wasteful number, since it uses less digits than its factorization.

1070397720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141614 (or 141604 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 36.

The square root of 1070397720 is about 32716.9332303625. The cubic root of 1070397720 is about 1022.9358324403.

The spelling of 1070397720 in words is "one billion, seventy million, three hundred ninety-seven thousand, seven hundred twenty".