72153802 has 32 divisors (see below), whose sum is σ = 128553984. Its totient is φ = 29752560.

The previous prime is 72153799. The next prime is 72153803. The reversal of 72153802 is 20835127.

It is a super-2 number, since 2×72153802² = 10412342286110408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72153803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416988 + ... + 417160.

It is an arithmetic number, because the mean of its divisors is an integer number (4017312).

Almost surely, 2^72153802 is an apocalyptic number.

72153802 is a deficient number, since it is larger than the sum of its proper divisors (56400182).

72153802 is an equidigital number, since it uses as much as digits as its factorization.

72153802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 72153802 is about 8494.3394092772. The cubic root of 72153802 is about 416.3127771321.

Adding to 72153802 its reverse (20835127), we get a palindrome (92988929).

The spelling of 72153802 in words is "seventy-two million, one hundred fifty-three thousand, eight hundred two".