72942810 has 32 divisors (see below), whose sum is σ = 175435200. Its totient is φ = 19410048.

The previous prime is 72942809. The next prime is 72942811. The reversal of 72942810 is 1824927.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72942809) and next prime (72942811).

It is a super-2 number, since 2×72942810² = 10641307061392200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72942811) 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, 13366 + ... + 18014.

It is an arithmetic number, because the mean of its divisors is an integer number (5482350).

Almost surely, 2^72942810 is an apocalyptic number.

72942810 is an abundant number, since it is smaller than the sum of its proper divisors (102492390).

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

72942810 is a wasteful number, since it uses less digits than its factorization.

72942810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5182.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 72942810 is about 8540.6562979668. The cubic root of 72942810 is about 417.8247512121.

The spelling of 72942810 in words is "seventy-two million, nine hundred forty-two thousand, eight hundred ten".