72841630 has 64 divisors (see below), whose sum is σ = 145152000. Its totient is φ = 26213760.

The previous prime is 72841619. The next prime is 72841697. The reversal of 72841630 is 3614827.

It is a super-2 number, since 2×72841630² = 10611806122113800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 72841592 and 72841601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488796 + ... + 488944.

It is an arithmetic number, because the mean of its divisors is an integer number (2268000).

Almost surely, 2^72841630 is an apocalyptic number.

72841630 is a deficient number, since it is larger than the sum of its proper divisors (72310370).

72841630 is a wasteful number, since it uses less digits than its factorization.

72841630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 72841630 is about 8534.7308100490. The cubic root of 72841630 is about 417.6314716168.

The spelling of 72841630 in words is "seventy-two million, eight hundred forty-one thousand, six hundred thirty".