72922751 has 8 divisors (see below), whose sum is σ = 80673408. Its totient is φ = 65359000.

The previous prime is 72922739. The next prime is 72922769. The reversal of 72922751 is 15722927.

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 72922751 - 2¹⁰ = 72921727 is a prime.

It is a super-2 number, since 2×72922751² = 10635455226816002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72922781) 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, 45905 + ... + 47466.

It is an arithmetic number, because the mean of its divisors is an integer number (10084176).

Almost surely, 2^72922751 is an apocalyptic number.

72922751 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

72922751 is a deficient number, since it is larger than the sum of its proper divisors (7750657).

72922751 is a wasteful number, since it uses less digits than its factorization.

72922751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93453.

The product of its digits is 17640, while the sum is 35.

The square root of 72922751 is about 8539.4818929488. The cubic root of 72922751 is about 417.7864476194.

The spelling of 72922751 in words is "seventy-two million, nine hundred twenty-two thousand, seven hundred fifty-one".