72697378 has 24 divisors (see below), whose sum is σ = 121291668. Its totient is φ = 32640192.

The previous prime is 72697369. The next prime is 72697393. The reversal of 72697378 is 87379627.

It can be written as a sum of positive squares in 6 ways, for example, as 31775769 + 40921609 = 5637^2 + 6397^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9600 + ... + 15412.

Almost surely, 2^72697378 is an apocalyptic number.

72697378 is a deficient number, since it is larger than the sum of its proper divisors (48594290).

72697378 is a wasteful number, since it uses less digits than its factorization.

72697378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878 (or 5865 counting only the distinct ones).

The product of its digits is 889056, while the sum is 49.

The square root of 72697378 is about 8526.2757403218. The cubic root of 72697378 is about 417.3556037875.

The spelling of 72697378 in words is "seventy-two million, six hundred ninety-seven thousand, three hundred seventy-eight".