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189372948 = 22319780107
BaseRepresentation
bin10110100100110…
…01101000010100
3111012100010211220
423102121220110
5341434413243
630442530340
74456433502
oct1322315024
9435303756
10189372948
1197994776
12535069b0
13303061cb
141b217672
151195a783
hexb499a14

189372948 has 24 divisors (see below), whose sum is σ = 444118752. Its totient is φ = 62803104.

The previous prime is 189372913. The next prime is 189372959. The reversal of 189372948 is 849273981.

It is a super-2 number, since 2×1893729482 = 71724226868421408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189372948.

It is a congruent number.

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, 37690 + ... + 42417.

It is an arithmetic number, because the mean of its divisors is an integer number (18504948).

Almost surely, 2189372948 is an apocalyptic number.

It is an amenable number.

189372948 is an abundant number, since it is smaller than the sum of its proper divisors (254745804).

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

189372948 is a wasteful number, since it uses less digits than its factorization.

189372948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80311 (or 80309 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 189372948 is about 13761.2843877307. The cubic root of 189372948 is about 574.2565797594.

The spelling of 189372948 in words is "one hundred eighty-nine million, three hundred seventy-two thousand, nine hundred forty-eight".

Divisors: 1 2 3 4 6 12 197 394 591 788 1182 2364 80107 160214 240321 320428 480642 961284 15781079 31562158 47343237 63124316 94686474 189372948