72246277 has 8 divisors (see below), whose sum is σ = 76571352. Its totient is φ = 67929600.

The previous prime is 72246241. The next prime is 72246281. The reversal of 72246277 is 77264227.

It can be written as a sum of positive squares in 4 ways, for example, as 352836 + 71893441 = 594^2 + 8479^2 .

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 72246277 - 2²³ = 63857669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72246217) 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, 28377 + ... + 30817.

It is an arithmetic number, because the mean of its divisors is an integer number (9571419).

Almost surely, 2^72246277 is an apocalyptic number.

It is an amenable number.

72246277 is a deficient number, since it is larger than the sum of its proper divisors (4325075).

72246277 is a wasteful number, since it uses less digits than its factorization.

72246277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199.

The product of its digits is 65856, while the sum is 37.

The square root of 72246277 is about 8499.7809971787. The cubic root of 72246277 is about 416.4905551917.

The spelling of 72246277 in words is "seventy-two million, two hundred forty-six thousand, two hundred seventy-seven".