72388487 has 2 divisors, whose sum is σ = 72388488. Its totient is φ = 72388486.

The previous prime is 72388409. The next prime is 72388523. The reversal of 72388487 is 78488327.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72388487 - 2²² = 68194183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72388087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36194243 + 36194244.

It is an arithmetic number, because the mean of its divisors is an integer number (36194244).

Almost surely, 2^72388487 is an apocalyptic number.

72388487 is a deficient number, since it is larger than the sum of its proper divisors (1).

72388487 is an equidigital number, since it uses as much as digits as its factorization.

72388487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 602112, while the sum is 47.

The square root of 72388487 is about 8508.1423942010. The cubic root of 72388487 is about 416.7636502421.

The spelling of 72388487 in words is "seventy-two million, three hundred eighty-eight thousand, four hundred eighty-seven".