13451972 has 12 divisors (see below), whose sum is σ = 23750076. Its totient is φ = 6666240.

The previous prime is 13451959. The next prime is 13451993. The reversal of 13451972 is 27915431.

It can be written as a sum of positive squares in 2 ways, for example, as 948676 + 12503296 = 974^2 + 3536^2 .

It is a super-3 number, since 3×13451972³ (a number of 22 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14429 + ... + 15332.

It is an arithmetic number, because the mean of its divisors is an integer number (1979173).

Almost surely, 2^13451972 is an apocalyptic number.

It is an amenable number.

13451972 is a deficient number, since it is larger than the sum of its proper divisors (10298104).

13451972 is a wasteful number, since it uses less digits than its factorization.

13451972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29878 (or 29876 counting only the distinct ones).

The product of its digits is 7560, while the sum is 32.

The square root of 13451972 is about 3667.6930078729. The cubic root of 13451972 is about 237.8274530259.

The spelling of 13451972 in words is "thirteen million, four hundred fifty-one thousand, nine hundred seventy-two".