72426651 has 16 divisors (see below), whose sum is σ = 110893440. Its totient is φ = 41584320.

The previous prime is 72426631. The next prime is 72426661. The reversal of 72426651 is 15662427.

It is not a de Polignac number, because 72426651 - 2⁶ = 72426587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (72426631) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 57130 + ... + 58383.

It is an arithmetic number, because the mean of its divisors is an integer number (6930840).

Almost surely, 2^72426651 is an apocalyptic number.

72426651 is a deficient number, since it is larger than the sum of its proper divisors (38466789).

72426651 is a wasteful number, since it uses less digits than its factorization.

72426651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115546.

The product of its digits is 20160, while the sum is 33.

The square root of 72426651 is about 8510.3848914135. The cubic root of 72426651 is about 416.8368781556.

The spelling of 72426651 in words is "seventy-two million, four hundred twenty-six thousand, six hundred fifty-one".