72973951 has 8 divisors (see below), whose sum is σ = 74771424. Its totient is φ = 71192160.

The previous prime is 72973909. The next prime is 72973991. The reversal of 72973951 is 15937927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72973951 - 2¹³ = 72965759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72973898 and 72973907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72973991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5790 + ... + 13396.

It is an arithmetic number, because the mean of its divisors is an integer number (9346428).

Almost surely, 2^72973951 is an apocalyptic number.

72973951 is a deficient number, since it is larger than the sum of its proper divisors (1797473).

72973951 is a wasteful number, since it uses less digits than its factorization.

72973951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7841.

The product of its digits is 119070, while the sum is 43.

The square root of 72973951 is about 8542.4792068813. The cubic root of 72973951 is about 417.8842024881.

The spelling of 72973951 in words is "seventy-two million, nine hundred seventy-three thousand, nine hundred fifty-one".