72894780 has 72 divisors (see below), whose sum is σ = 252706272. Its totient is φ = 16661376.

The previous prime is 72894779. The next prime is 72894781. The reversal of 72894780 is 8749827.

It is an interprime number because it is at equal distance from previous prime (72894779) and next prime (72894781).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72894781) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 27667 + ... + 30186.

Almost surely, 2^72894780 is an apocalyptic number.

72894780 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72894780 is an abundant number, since it is smaller than the sum of its proper divisors (179811492).

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

72894780 is a wasteful number, since it uses less digits than its factorization.

72894780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57875 (or 57870 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 72894780 is about 8537.8439901418. The cubic root of 72894780 is about 417.7330239667.

The spelling of 72894780 in words is "seventy-two million, eight hundred ninety-four thousand, seven hundred eighty".