72450387 has 6 divisors (see below), whose sum is σ = 104650572. Its totient is φ = 48300252.

The previous prime is 72450377. The next prime is 72450409. The reversal of 72450387 is 78305427.

72450387 is a `hidden beast` number, since 72 + 4 + 503 + 87 = 666.

It is not a de Polignac number, because 72450387 - 2¹² = 72446291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72450337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4025013 + ... + 4025030.

It is an arithmetic number, because the mean of its divisors is an integer number (17441762).

Almost surely, 2^72450387 is an apocalyptic number.

72450387 is a deficient number, since it is larger than the sum of its proper divisors (32200185).

72450387 is a wasteful number, since it uses less digits than its factorization.

72450387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8050049 (or 8050046 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 72450387 is about 8511.7793086992. The cubic root of 72450387 is about 416.8824090910.

The spelling of 72450387 in words is "seventy-two million, four hundred fifty thousand, three hundred eighty-seven".