13700072 has 8 divisors (see below), whose sum is σ = 25687650. Its totient is φ = 6850032.

The previous prime is 13700069. The next prime is 13700081. The reversal of 13700072 is 27000731.

It can be written as a sum of positive squares in only one way, i.e., 12630916 + 1069156 = 3554^2 + 1034^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 856247 + ... + 856262.

Almost surely, 2^13700072 is an apocalyptic number.

It is an amenable number.

13700072 is a deficient number, since it is larger than the sum of its proper divisors (11987578).

13700072 is a wasteful number, since it uses less digits than its factorization.

13700072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712515 (or 1712511 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 13700072 is about 3701.3608308297. The cubic root of 13700072 is about 239.2806702477.

It can be divided in two parts, 1 and 3700072, that added together give a palindrome (3700073).

The spelling of 13700072 in words is "thirteen million, seven hundred thousand, seventy-two".