72155414 has 16 divisors (see below), whose sum is σ = 112819200. Its totient is φ = 34571880.

The previous prime is 72155399. The next prime is 72155417. The reversal of 72155414 is 41455127.

It is a super-2 number, since 2×72155414² = 10412807539022792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72155417) 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, 737 + ... + 12035.

It is an arithmetic number, because the mean of its divisors is an integer number (7051200).

Almost surely, 2^72155414 is an apocalyptic number.

72155414 is a deficient number, since it is larger than the sum of its proper divisors (40663786).

72155414 is a wasteful number, since it uses less digits than its factorization.

72155414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11435.

The product of its digits is 5600, while the sum is 29.

The square root of 72155414 is about 8494.4342954666. The cubic root of 72155414 is about 416.3158774132.

The spelling of 72155414 in words is "seventy-two million, one hundred fifty-five thousand, four hundred fourteen".