70258440 has 64 divisors (see below), whose sum is σ = 240888960. Its totient is φ = 16058880.

The previous prime is 70258427. The next prime is 70258451. The reversal of 70258440 is 4485207.

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 = 70258398 and 70258407.

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, 40981 + ... + 42660.

It is an arithmetic number, because the mean of its divisors is an integer number (3763890).

Almost surely, 2^70258440 is an apocalyptic number.

70258440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70258440 is an abundant number, since it is smaller than the sum of its proper divisors (170630520).

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

70258440 is a wasteful number, since it uses less digits than its factorization.

70258440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83662 (or 83658 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 70258440 is about 8382.0307801869. The cubic root of 70258440 is about 412.6350999169.

The spelling of 70258440 in words is "seventy million, two hundred fifty-eight thousand, four hundred forty".