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1900672040 = 235149931699
BaseRepresentation
bin111000101001001…
…1111010000101000
311220110110010212202
41301102133100220
512343033001130
6512333555332
765046305621
oct16122372050
94813403782
101900672040
11895975043
12450645b48
13243a0a717
14140600a48
15b1ce2145
hex7149f428

1900672040 has 32 divisors (see below), whose sum is σ = 4279500000. Its totient is φ = 759737664.

The previous prime is 1900672021. The next prime is 1900672069. The reversal of 1900672040 is 402760091.

It is a super-2 number, since 2×19006720402 = 7225108407275523200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1900671994 and 1900672012.

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, 44111 + ... + 75809.

It is an arithmetic number, because the mean of its divisors is an integer number (133734375).

Almost surely, 21900672040 is an apocalyptic number.

1900672040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1900672040 is an abundant number, since it is smaller than the sum of its proper divisors (2378827960).

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

1900672040 is a wasteful number, since it uses less digits than its factorization.

1900672040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33209 (or 33205 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 1900672040 is about 43596.6975813536. The cubic root of 1900672040 is about 1238.7083410881.

The spelling of 1900672040 in words is "one billion, nine hundred million, six hundred seventy-two thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 1499 2998 5996 7495 11992 14990 29980 31699 59960 63398 126796 158495 253592 316990 633980 1267960 47516801 95033602 190067204 237584005 380134408 475168010 950336020 1900672040