72641019 has 24 divisors (see below), whose sum is σ = 107787456. Its totient is φ = 43476400.

The previous prime is 72641011. The next prime is 72641071. The reversal of 72641019 is 91014627.

It is a happy number.

It is not a de Polignac number, because 72641019 - 2³ = 72641011 is a prime.

It is a super-2 number, since 2×72641019² = 10553435282716722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72641011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28924 + ... + 31334.

It is an arithmetic number, because the mean of its divisors is an integer number (4491144).

Almost surely, 2^72641019 is an apocalyptic number.

72641019 is a deficient number, since it is larger than the sum of its proper divisors (35146437).

72641019 is a wasteful number, since it uses less digits than its factorization.

72641019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 72641019 is about 8522.9700809049. The cubic root of 72641019 is about 417.2477235760.

The spelling of 72641019 in words is "seventy-two million, six hundred forty-one thousand, nineteen".