72403433 has 4 divisors (see below), whose sum is σ = 76214160. Its totient is φ = 68592708.

The previous prime is 72403427. The next prime is 72403447. The reversal of 72403433 is 33430427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72403433 - 2¹² = 72399337 is a prime.

It is a super-2 number, since 2×72403433² = 10484514220370978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72433433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1905335 + ... + 1905372.

It is an arithmetic number, because the mean of its divisors is an integer number (19053540).

Almost surely, 2^72403433 is an apocalyptic number.

It is an amenable number.

72403433 is a deficient number, since it is larger than the sum of its proper divisors (3810727).

72403433 is a wasteful number, since it uses less digits than its factorization.

72403433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810726.

The product of its (nonzero) digits is 6048, while the sum is 26.

The square root of 72403433 is about 8509.0206839565. The cubic root of 72403433 is about 416.7923312342.

The spelling of 72403433 in words is "seventy-two million, four hundred three thousand, four hundred thirty-three".