72197802 has 24 divisors (see below), whose sum is σ = 160245540. Its totient is φ = 23478720.

The previous prime is 72197789. The next prime is 72197813. The reversal of 72197802 is 20879127.

It can be written as a sum of positive squares in 2 ways, for example, as 69405561 + 2792241 = 8331^2 + 1671^2 .

It is a super-2 number, since 2×72197802² = 10425045227262408, which contains 22 as substring.

72197802 is a modest number, since divided by 197802 gives 72 as remainder.

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 11 ways as a sum of consecutive naturals, for example, 48177 + ... + 49652.

Almost surely, 2^72197802 is an apocalyptic number.

72197802 is an abundant number, since it is smaller than the sum of its proper divisors (88047738).

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

72197802 is a wasteful number, since it uses less digits than its factorization.

72197802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97878 (or 97875 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 72197802 is about 8496.9289746355. The cubic root of 72197802 is about 416.3973836232.

The spelling of 72197802 in words is "seventy-two million, one hundred ninety-seven thousand, eight hundred two".