72671490 has 48 divisors (see below), whose sum is σ = 197166528. Its totient is φ = 18535968.

The previous prime is 72671479. The next prime is 72671491. The reversal of 72671490 is 9417627.

It is a happy number.

It is a super-2 number, since 2×72671490² = 10562290917640200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72671491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15484 + ... + 19623.

It is an arithmetic number, because the mean of its divisors is an integer number (4107636).

Almost surely, 2^72671490 is an apocalyptic number.

72671490 is an abundant number, since it is smaller than the sum of its proper divisors (124495038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72671490 is a wasteful number, since it uses less digits than its factorization.

72671490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35143 (or 35140 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 72671490 is about 8524.7574745561. The cubic root of 72671490 is about 417.3060569082.

The spelling of 72671490 in words is "seventy-two million, six hundred seventy-one thousand, four hundred ninety".