72135490 has 32 divisors (see below), whose sum is σ = 149174784. Its totient is φ = 24601920.

The previous prime is 72135473. The next prime is 72135493. The reversal of 72135490 is 9453127.

It is not an unprimeable number, because it can be changed into a prime (72135493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11175 + ... + 16405.

It is an arithmetic number, because the mean of its divisors is an integer number (4661712).

Almost surely, 2^72135490 is an apocalyptic number.

72135490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72135490 is an abundant number, since it is smaller than the sum of its proper divisors (77039294).

72135490 is a wasteful number, since it uses less digits than its factorization.

72135490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5442.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 72135490 is about 8493.2614465822. The cubic root of 72135490 is about 416.2775553125.

The spelling of 72135490 in words is "seventy-two million, one hundred thirty-five thousand, four hundred ninety".