72274434 has 16 divisors (see below), whose sum is σ = 145901088. Its totient is φ = 23866112.

The previous prime is 72274421. The next prime is 72274439. The reversal of 72274434 is 43447227.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72274395 and 72274404.

It is not an unprimeable number, because it can be changed into a prime (72274439) 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, 55647 + ... + 56930.

It is an arithmetic number, because the mean of its divisors is an integer number (9118818).

Almost surely, 2^72274434 is an apocalyptic number.

72274434 is an abundant number, since it is smaller than the sum of its proper divisors (73626654).

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

72274434 is a wasteful number, since it uses less digits than its factorization.

72274434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112689.

The product of its digits is 37632, while the sum is 33.

The square root of 72274434 is about 8501.4371726197. The cubic root of 72274434 is about 416.5446553330.

The spelling of 72274434 in words is "seventy-two million, two hundred seventy-four thousand, four hundred thirty-four".