72434090 has 8 divisors (see below), whose sum is σ = 130381380. Its totient is φ = 28973632.

The previous prime is 72434081. The next prime is 72434113. The reversal of 72434090 is 9043427.

It can be written as a sum of positive squares in 2 ways, for example, as 68674369 + 3759721 = 8287^2 + 1939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3621695 + ... + 3621714.

Almost surely, 2^72434090 is an apocalyptic number.

72434090 is a deficient number, since it is larger than the sum of its proper divisors (57947290).

72434090 is a wasteful number, since it uses less digits than its factorization.

72434090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7243416.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 72434090 is about 8510.8219344550. The cubic root of 72434090 is about 416.8511488849.

The spelling of 72434090 in words is "seventy-two million, four hundred thirty-four thousand, ninety".