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22750961 = 194773349
BaseRepresentation
bin101011011001…
…0011011110001
31120210212110012
41112302123301
521311012321
62131344305
7364244222
oct126623361
946725405
1022750961
111192a152
127752095
13493760c
143043249
151ee605b
hex15b26f1

22750961 has 16 divisors (see below), whose sum is σ = 24864000. Its totient is φ = 20746368.

The previous prime is 22750951. The next prime is 22750963. The reversal of 22750961 is 16905722.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-22750961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22750963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65015 + ... + 65363.

It is an arithmetic number, because the mean of its divisors is an integer number (1554000).

Almost surely, 222750961 is an apocalyptic number.

It is an amenable number.

22750961 is a deficient number, since it is larger than the sum of its proper divisors (2113039).

22750961 is a wasteful number, since it uses less digits than its factorization.

22750961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 22750961 is about 4769.7967461937. The cubic root of 22750961 is about 283.3565451187.

The spelling of 22750961 in words is "twenty-two million, seven hundred fifty thousand, nine hundred sixty-one".

Divisors: 1 19 47 73 349 893 1387 3431 6631 16403 25477 65189 311657 484063 1197419 22750961