70021472 has 12 divisors (see below), whose sum is σ = 137854836. Its totient is φ = 35010720.

The previous prime is 70021459. The next prime is 70021519. The reversal of 70021472 is 27412007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094054 + ... + 1094117.

It is an arithmetic number, because the mean of its divisors is an integer number (11487903).

Almost surely, 2^70021472 is an apocalyptic number.

It is an amenable number.

70021472 is a deficient number, since it is larger than the sum of its proper divisors (67833364).

70021472 is a wasteful number, since it uses less digits than its factorization.

70021472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188181 (or 2188173 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 70021472 is about 8367.8833643879. The cubic root of 70021472 is about 412.1706648339.

Adding to 70021472 its reverse (27412007), we get a palindrome (97433479).

The spelling of 70021472 in words is "seventy million, twenty-one thousand, four hundred seventy-two".