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40980990 = 2357271879
BaseRepresentation
bin1001110001010…
…1000111111110
32212010001100110
42130111013332
540442342430
64022210450
71005222051
oct234250776
985101313
1040980990
1121150696
1211883a26
13864b20b
14562aa98
1538e77b0
hex27151fe

40980990 has 32 divisors (see below), whose sum is σ = 98542080. Its totient is φ = 10907424.

The previous prime is 40980949. The next prime is 40981007. The reversal of 40980990 is 9908904.

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, 20871 + ... + 22749.

It is an arithmetic number, because the mean of its divisors is an integer number (3079440).

Almost surely, 240980990 is an apocalyptic number.

40980990 is an abundant number, since it is smaller than the sum of its proper divisors (57561090).

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

40980990 is a wasteful number, since it uses less digits than its factorization.

40980990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 40980990 is about 6401.6396337188. The cubic root of 40980990 is about 344.7684226209.

The spelling of 40980990 in words is "forty million, nine hundred eighty thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 727 1454 1879 2181 3635 3758 4362 5637 7270 9395 10905 11274 18790 21810 28185 56370 1366033 2732066 4098099 6830165 8196198 13660330 20490495 40980990