70791240 has 128 divisors (see below), whose sum is σ = 238775040. Its totient is φ = 16659456.

The previous prime is 70791229. The next prime is 70791251. The reversal of 70791240 is 4219707.

It is an interprime number because it is at equal distance from previous prime (70791229) and next prime (70791251).

It is a super-2 number, since 2×70791240² = 10022799321475200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 70791198 and 70791207.

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, 34894 + ... + 36866.

It is an arithmetic number, because the mean of its divisors is an integer number (1865430).

Almost surely, 2^70791240 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 70791240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119387520).

70791240 is an abundant number, since it is smaller than the sum of its proper divisors (167983800).

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

70791240 is a wasteful number, since it uses less digits than its factorization.

70791240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023 (or 2019 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 70791240 is about 8413.7530270385. The cubic root of 70791240 is about 413.6755375106.

The spelling of 70791240 in words is "seventy million, seven hundred ninety-one thousand, two hundred forty".