22487742 has 12 divisors (see below), whose sum is σ = 48723480. Its totient is φ = 7495908.

The previous prime is 22487737. The next prime is 22487743. The reversal of 22487742 is 24778422.

It is a super-3 number, since 3×22487742³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22487697 and 22487706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22487743) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 624642 + ... + 624677.

It is an arithmetic number, because the mean of its divisors is an integer number (4060290).

Almost surely, 2^22487742 is an apocalyptic number.

22487742 is an abundant number, since it is smaller than the sum of its proper divisors (26235738).

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

22487742 is a wasteful number, since it uses less digits than its factorization.

22487742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249327 (or 1249324 counting only the distinct ones).

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

The square root of 22487742 is about 4742.1242075677. The cubic root of 22487742 is about 282.2595317084.

The spelling of 22487742 in words is "twenty-two million, four hundred eighty-seven thousand, seven hundred forty-two".