22798251 has 12 divisors (see below), whose sum is σ = 37635312. Its totient is φ = 13027536.

The previous prime is 22798231. The next prime is 22798261. The reversal of 22798251 is 15289722.

22798251 = 249² + 250² + ... + 437².

It is not a de Polignac number, because 22798251 - 2⁶ = 22798187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22798231) 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, 180876 + ... + 181001.

It is an arithmetic number, because the mean of its divisors is an integer number (3136276).

Almost surely, 2^22798251 is an apocalyptic number.

22798251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22798251 is a deficient number, since it is larger than the sum of its proper divisors (14837061).

22798251 is a wasteful number, since it uses less digits than its factorization.

22798251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361890 (or 361887 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 22798251 is about 4774.7514071415. The cubic root of 22798251 is about 283.5527369395.

The spelling of 22798251 in words is "twenty-two million, seven hundred ninety-eight thousand, two hundred fifty-one".