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22934420 = 2253171521
BaseRepresentation
bin101011101111…
…1001110010100
31121011012002222
41113133032110
521332400140
62135321512
7365640125
oct127371624
947135088
1022934420
1111a44a73
127820298
13499cc82
14309004c
1520305b5
hex15df394

22934420 has 48 divisors (see below), whose sum is σ = 50512896. Its totient is φ = 8736000.

The previous prime is 22934407. The next prime is 22934453. The reversal of 22934420 is 2443922.

It is a self number, because there is not a number n which added to its sum of digits gives 22934420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43760 + ... + 44280.

It is an arithmetic number, because the mean of its divisors is an integer number (1052352).

Almost surely, 222934420 is an apocalyptic number.

22934420 is a gapful number since it is divisible by the number (20) 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 22934420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25256448).

22934420 is an abundant number, since it is smaller than the sum of its proper divisors (27578476).

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

22934420 is a wasteful number, since it uses less digits than its factorization.

22934420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 22934420 is about 4788.9894549894. The cubic root of 22934420 is about 284.1161496740.

The spelling of 22934420 in words is "twenty-two million, nine hundred thirty-four thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 31 62 71 124 142 155 284 310 355 521 620 710 1042 1420 2084 2201 2605 4402 5210 8804 10420 11005 16151 22010 32302 36991 44020 64604 73982 80755 147964 161510 184955 323020 369910 739820 1146721 2293442 4586884 5733605 11467210 22934420