22512890 has 16 divisors (see below), whose sum is σ = 40642560. Its totient is φ = 8978640.

The previous prime is 22512869. The next prime is 22512901. The reversal of 22512890 is 9821522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455 + ... + 6725.

It is an arithmetic number, because the mean of its divisors is an integer number (2540160).

Almost surely, 2^22512890 is an apocalyptic number.

22512890 is a deficient number, since it is larger than the sum of its proper divisors (18129670).

22512890 is a wasteful number, since it uses less digits than its factorization.

22512890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6637.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 22512890 is about 4744.7750210100. The cubic root of 22512890 is about 282.3647092811.

The spelling of 22512890 in words is "twenty-two million, five hundred twelve thousand, eight hundred ninety".