70251420 has 24 divisors (see below), whose sum is σ = 196704144. Its totient is φ = 18733696.

The previous prime is 70251397. The next prime is 70251437. The reversal of 70251420 is 2415207.

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, 585369 + ... + 585488.

It is an arithmetic number, because the mean of its divisors is an integer number (8196006).

Almost surely, 2^70251420 is an apocalyptic number.

It is an amenable number.

70251420 is an abundant number, since it is smaller than the sum of its proper divisors (126452724).

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

70251420 is a wasteful number, since it uses less digits than its factorization.

70251420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170869 (or 1170867 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 70251420 is about 8381.6120167901. The cubic root of 70251420 is about 412.6213563966.

Adding to 70251420 its reverse (2415207), we get a palindrome (72666627).

The spelling of 70251420 in words is "seventy million, two hundred fifty-one thousand, four hundred twenty".