72973078 has 24 divisors (see below), whose sum is σ = 117062784. Its totient is φ = 34108800.

The previous prime is 72973067. The next prime is 72973079. The reversal of 72973078 is 87037927.

It is a super-2 number, since 2×72973078² = 10650140225588168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72973079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110068 + ... + 110728.

It is an arithmetic number, because the mean of its divisors is an integer number (4877616).

Almost surely, 2^72973078 is an apocalyptic number.

72973078 is a deficient number, since it is larger than the sum of its proper divisors (44089706).

72973078 is a wasteful number, since it uses less digits than its factorization.

72973078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 72973078 is about 8542.4281091502. The cubic root of 72973078 is about 417.8825360744.

The spelling of 72973078 in words is "seventy-two million, nine hundred seventy-three thousand, seventy-eight".