72403254 has 96 divisors (see below), whose sum is σ = 202245120. Its totient is φ = 18794160.

The previous prime is 72403217. The next prime is 72403291. The reversal of 72403254 is 45230427.

72403254 is a `hidden beast` number, since 7 + 2 + 403 + 254 = 666.

It is an interprime number because it is at equal distance from previous prime (72403217) and next prime (72403291).

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44947 + ... + 46529.

It is an arithmetic number, because the mean of its divisors is an integer number (2106720).

Almost surely, 2^72403254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72403254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101122560).

72403254 is an abundant number, since it is smaller than the sum of its proper divisors (129841866).

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

72403254 is a wasteful number, since it uses less digits than its factorization.

72403254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623 (or 1606 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 72403254 is about 8509.0101657008. The cubic root of 72403254 is about 416.7919877611.

The spelling of 72403254 in words is "seventy-two million, four hundred three thousand, two hundred fifty-four".