72440190 has 32 divisors (see below), whose sum is σ = 193174560. Its totient is φ = 19317312.

The previous prime is 72440167. The next prime is 72440227. The reversal of 72440190 is 9104427.

It is a happy number.

It is a super-2 number, since 2×72440190² = 10495162254472200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133879 + ... + 134418.

It is an arithmetic number, because the mean of its divisors is an integer number (6036705).

Almost surely, 2^72440190 is an apocalyptic number.

72440190 is an abundant number, since it is smaller than the sum of its proper divisors (120734370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72440190 is a wasteful number, since it uses less digits than its factorization.

72440190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268313 (or 268307 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 72440190 is about 8511.1802941778. The cubic root of 72440190 is about 416.8628501921.

The spelling of 72440190 in words is "seventy-two million, four hundred forty thousand, one hundred ninety".