70251320 has 32 divisors (see below), whose sum is σ = 159321600. Its totient is φ = 27877248.

The previous prime is 70251317. The next prime is 70251343. The reversal of 70251320 is 2315207.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 70251292 and 70251301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1835 + ... + 11994.

It is an arithmetic number, because the mean of its divisors is an integer number (4978800).

Almost surely, 2^70251320 is an apocalyptic number.

It is an amenable number.

70251320 is an abundant number, since it is smaller than the sum of its proper divisors (89070280).

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

70251320 is a wasteful number, since it uses less digits than its factorization.

70251320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13967 (or 13963 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 70251320 is about 8381.6060513484. The cubic root of 70251320 is about 412.6211606134.

Adding to 70251320 its reverse (2315207), we get a palindrome (72566527).

The spelling of 70251320 in words is "seventy million, two hundred fifty-one thousand, three hundred twenty".