72674420 has 96 divisors (see below), whose sum is σ = 190756608. Its totient is φ = 22643712.

The previous prime is 72674419. The next prime is 72674453. The reversal of 72674420 is 2447627.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132587 + ... + 133133.

It is an arithmetic number, because the mean of its divisors is an integer number (1987048).

Almost surely, 2^72674420 is an apocalyptic number.

72674420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72674420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95378304).

72674420 is an abundant number, since it is smaller than the sum of its proper divisors (118082188).

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

72674420 is a wasteful number, since it uses less digits than its factorization.

72674420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 72674420 is about 8524.9293252202. The cubic root of 72674420 is about 417.3116652071.

The spelling of 72674420 in words is "seventy-two million, six hundred seventy-four thousand, four hundred twenty".