88472781 has 12 divisors (see below), whose sum is σ = 128331840. Its totient is φ = 58733640.

The previous prime is 88472779. The next prime is 88472807. The reversal of 88472781 is 18727488.

It is not a de Polignac number, because 88472781 - 2¹ = 88472779 is a prime.

It is a super-2 number, since 2×88472781² = 15654865955747922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88472081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18415 + ... + 22716.

It is an arithmetic number, because the mean of its divisors is an integer number (10694320).

Almost surely, 2^88472781 is an apocalyptic number.

It is an amenable number.

88472781 is a deficient number, since it is larger than the sum of its proper divisors (39859059).

88472781 is a wasteful number, since it uses less digits than its factorization.

88472781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41376 (or 41373 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 88472781 is about 9405.9970763338. The cubic root of 88472781 is about 445.5911530728.

It can be divided in two parts, 88472 and 781, that added together give a triangular number (89253 = T₄₂₂).

The spelling of 88472781 in words is "eighty-eight million, four hundred seventy-two thousand, seven hundred eighty-one".