70315840 has 56 divisors (see below), whose sum is σ = 191365632. Its totient is φ = 24107520.

The previous prime is 70315837. The next prime is 70315867. The reversal of 70315840 is 4851307.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 70315799 and 70315808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13456 + ... + 17935.

Almost surely, 2^70315840 is an apocalyptic number.

70315840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70315840 is an abundant number, since it is smaller than the sum of its proper divisors (121049792).

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

70315840 is a wasteful number, since it uses less digits than its factorization.

70315840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31415 (or 31405 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 70315840 is about 8385.4540723803. The cubic root of 70315840 is about 412.7474413784.

The spelling of 70315840 in words is "seventy million, three hundred fifteen thousand, eight hundred forty".