72942438 has 16 divisors (see below), whose sum is σ = 147732480. Its totient is φ = 24006216.

The previous prime is 72942433. The next prime is 72942439. The reversal of 72942438 is 83424927.

It is a super-2 number, since 2×72942438² = 10641198522767688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72942396 and 72942405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72942433) 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 7 ways as a sum of consecutive naturals, for example, 76470 + ... + 77417.

It is an arithmetic number, because the mean of its divisors is an integer number (9233280).

Almost surely, 2^72942438 is an apocalyptic number.

72942438 is an abundant number, since it is smaller than the sum of its proper divisors (74790042).

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

72942438 is a wasteful number, since it uses less digits than its factorization.

72942438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153971.

The product of its digits is 96768, while the sum is 39.

The square root of 72942438 is about 8540.6345197532. The cubic root of 72942438 is about 417.8240409247.

The spelling of 72942438 in words is "seventy-two million, nine hundred forty-two thousand, four hundred thirty-eight".