72642026 has 16 divisors (see below), whose sum is σ = 112137696. Its totient is φ = 35266896.

The previous prime is 72642019. The next prime is 72642029. The reversal of 72642026 is 62024627.

It is a self number, because there is not a number n which added to its sum of digits gives 72642026.

It is not an unprimeable number, because it can be changed into a prime (72642029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60605 + ... + 61791.

It is an arithmetic number, because the mean of its divisors is an integer number (7008606).

Almost surely, 2^72642026 is an apocalyptic number.

72642026 is a deficient number, since it is larger than the sum of its proper divisors (39495670).

72642026 is a wasteful number, since it uses less digits than its factorization.

72642026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 72642026 is about 8523.0291563505. The cubic root of 72642026 is about 417.2496516258.

The spelling of 72642026 in words is "seventy-two million, six hundred forty-two thousand, twenty-six".