22742748 has 96 divisors (see below), whose sum is σ = 68544000. Its totient is φ = 6386688.

The previous prime is 22742737. The next prime is 22742761. The reversal of 22742748 is 84724722.

22742748 is a `hidden beast` number, since 227 + 427 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50428 + ... + 50876.

It is an arithmetic number, because the mean of its divisors is an integer number (714000).

Almost surely, 2^22742748 is an apocalyptic number.

22742748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22742748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34272000).

22742748 is an abundant number, since it is smaller than the sum of its proper divisors (45801252).

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

22742748 is a wasteful number, since it uses less digits than its factorization.

22742748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 528 counting only the distinct ones).

The product of its digits is 50176, while the sum is 36.

The square root of 22742748 is about 4768.9357303281. The cubic root of 22742748 is about 283.3224441797.

It can be divided in two parts, 227427 and 48, that added together give a triangular number (227475 = T₆₇₄).

The spelling of 22742748 in words is "twenty-two million, seven hundred forty-two thousand, seven hundred forty-eight".