13802020324 has 9 divisors (see below), whose sum is σ = 24153946761. Its totient is φ = 6900892680.

The previous prime is 13802020303. The next prime is 13802020381. The reversal of 13802020324 is 42302020831.

The square root of 13802020324 is 117482.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3471330724 + 10330689600 = 58918^2 + 101640^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 205594 + ... + 264334.

Almost surely, 2^13802020324 is an apocalyptic number.

13802020324 is the 117482-nd square number.

It is an amenable number.

13802020324 is a deficient number, since it is larger than the sum of its proper divisors (10351926437).

13802020324 is an frugal number, since it uses more digits than its factorization.

13802020324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117486 (or 58743 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Multiplying 13802020324 by its sum of digits (25), we get a square (345050508100 = 587410²).

Multiplying 13802020324 by its product of nonzero digits (2304), we get a square (31799854826496 = 5639136²).

The spelling of 13802020324 in words is "thirteen billion, eight hundred two million, twenty thousand, three hundred twenty-four".