31426272 has 48 divisors (see below), whose sum is σ = 91662480. Its totient is φ = 10475136.

The previous prime is 31426267. The next prime is 31426273. The reversal of 31426272 is 27262413.

31426272 is a `hidden beast` number, since 31 + 4 + 2 + 627 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×31426272² = 1975221143635968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) 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 (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31426273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17323 + ... + 19050.

It is an arithmetic number, because the mean of its divisors is an integer number (1909635).

Almost surely, 2^31426272 is an apocalyptic number.

31426272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31426272 is an abundant number, since it is smaller than the sum of its proper divisors (60236208).

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

31426272 is a wasteful number, since it uses less digits than its factorization.

31426272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36392 (or 36378 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 31426272 is about 5605.9140200328. The cubic root of 31426272 is about 315.5713892148.

Adding to 31426272 its reverse (27262413), we get a palindrome (58688685).

The spelling of 31426272 in words is "thirty-one million, four hundred twenty-six thousand, two hundred seventy-two".