72946072 has 16 divisors (see below), whose sum is σ = 138506400. Its totient is φ = 36011040.

The previous prime is 72946063. The next prime is 72946141. The reversal of 72946072 is 27064927.

It is a happy number.

It is a super-2 number, since 2×72946072² = 10642258840458368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57079 + ... + 58342.

It is an arithmetic number, because the mean of its divisors is an integer number (8656650).

Almost surely, 2^72946072 is an apocalyptic number.

It is an amenable number.

72946072 is a deficient number, since it is larger than the sum of its proper divisors (65560328).

72946072 is a wasteful number, since it uses less digits than its factorization.

72946072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115506 (or 115502 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 72946072 is about 8540.8472647624. The cubic root of 72946072 is about 417.8309794889.

It can be divided in two parts, 7294 and 6072, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 72946072 in words is "seventy-two million, nine hundred forty-six thousand, seventy-two".