72402877 has 2 divisors, whose sum is σ = 72402878. Its totient is φ = 72402876.

The previous prime is 72402871. The next prime is 72402893. The reversal of 72402877 is 77820427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43178041 + 29224836 = 6571^2 + 5406^2 .

It is a cyclic number.

It is not a de Polignac number, because 72402877 - 2¹⁹ = 71878589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72402871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36201438 + 36201439.

It is an arithmetic number, because the mean of its divisors is an integer number (36201439).

Almost surely, 2^72402877 is an apocalyptic number.

It is an amenable number.

72402877 is a deficient number, since it is larger than the sum of its proper divisors (1).

72402877 is an equidigital number, since it uses as much as digits as its factorization.

72402877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 72402877 is about 8508.9880126840. The cubic root of 72402877 is about 416.7912643551.

The spelling of 72402877 in words is "seventy-two million, four hundred two thousand, eight hundred seventy-seven".