72648770 has 32 divisors (see below), whose sum is σ = 137332800. Its totient is φ = 27631296.

The previous prime is 72648749. The next prime is 72648773. The reversal of 72648770 is 7784627.

It is not an unprimeable number, because it can be changed into a prime (72648773) 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, 17561 + ... + 21299.

It is an arithmetic number, because the mean of its divisors is an integer number (4291650).

Almost surely, 2^72648770 is an apocalyptic number.

72648770 is a deficient number, since it is larger than the sum of its proper divisors (64684030).

72648770 is a wasteful number, since it uses less digits than its factorization.

72648770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 72648770 is about 8523.4247811546. The cubic root of 72648770 is about 417.2625635481.

The spelling of 72648770 in words is "seventy-two million, six hundred forty-eight thousand, seven hundred seventy".