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2902430661 = 31374421299
BaseRepresentation
bin1010110011111111…
…1001001111000101
321111021102202100220
42230333321033011
521421010240121
61200001054553
7131632152654
oct25477711705
97437382326
102902430661
11125a38a129
12690027459
133734121c0
141d768919b
1511ec1e6c6
hexacff93c5

2902430661 has 8 divisors (see below), whose sum is σ = 4167592800. Its totient is φ = 1786111152.

The previous prime is 2902430659. The next prime is 2902430669. The reversal of 2902430661 is 1660342092.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2902430661 - 21 = 2902430659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2902430669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37210611 + ... + 37210688.

It is an arithmetic number, because the mean of its divisors is an integer number (520949100).

Almost surely, 22902430661 is an apocalyptic number.

It is an amenable number.

2902430661 is a deficient number, since it is larger than the sum of its proper divisors (1265162139).

2902430661 is a wasteful number, since it uses less digits than its factorization.

2902430661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74421315.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 2902430661 is about 53874.2114652270. The cubic root of 2902430661 is about 1426.4414528316.

It can be divided in two parts, 29024 and 30661, that added together give a triangular number (59685 = T345).

The spelling of 2902430661 in words is "two billion, nine hundred two million, four hundred thirty thousand, six hundred sixty-one".

Divisors: 1 3 13 39 74421299 223263897 967476887 2902430661