70021372 has 24 divisors (see below), whose sum is σ = 126234416. Its totient is φ = 33965568.

The previous prime is 70021363. The next prime is 70021397. The reversal of 70021372 is 27312007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25708 + ... + 28300.

Almost surely, 2^70021372 is an apocalyptic number.

It is an amenable number.

70021372 is a deficient number, since it is larger than the sum of its proper divisors (56213044).

70021372 is a wasteful number, since it uses less digits than its factorization.

70021372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797 (or 2795 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 70021372 is about 8367.8773891591. The cubic root of 70021372 is about 412.1704686222.

Adding to 70021372 its reverse (27312007), we get a palindrome (97333379).

The spelling of 70021372 in words is "seventy million, twenty-one thousand, three hundred seventy-two".