72735670 has 16 divisors (see below), whose sum is σ = 149627808. Its totient is φ = 24937920.

The previous prime is 72735647. The next prime is 72735697. The reversal of 72735670 is 7653727.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519471 + ... + 519610.

It is an arithmetic number, because the mean of its divisors is an integer number (9351738).

Almost surely, 2^72735670 is an apocalyptic number.

72735670 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72735670 is an abundant number, since it is smaller than the sum of its proper divisors (76892138).

72735670 is a wasteful number, since it uses less digits than its factorization.

72735670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039095.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 72735670 is about 8528.5209737680. The cubic root of 72735670 is about 417.4288690417.

The spelling of 72735670 in words is "seventy-two million, seven hundred thirty-five thousand, six hundred seventy".