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2974981 = 23129347
BaseRepresentation
bin1011010110010100000101
312121010220111
423112110011
51230144411
6143433021
734200262
oct13262405
95533814
102974981
111752169
12bb5771
13802159
14576269
153db721
hex2d6505

2974981 has 4 divisors (see below), whose sum is σ = 3104352. Its totient is φ = 2845612.

The previous prime is 2974973. The next prime is 2974987. The reversal of 2974981 is 1894792.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2974981 - 23 = 2974973 is a prime.

It is a super-2 number, since 2×29749812 = 17701023900722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2974987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64651 + ... + 64696.

It is an arithmetic number, because the mean of its divisors is an integer number (776088).

22974981 is an apocalyptic number.

It is an amenable number.

2974981 is a deficient number, since it is larger than the sum of its proper divisors (129371).

2974981 is a wasteful number, since it uses less digits than its factorization.

2974981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129370.

The product of its digits is 36288, while the sum is 40.

The square root of 2974981 is about 1724.8133232324. The cubic root of 2974981 is about 143.8229079434.

The spelling of 2974981 in words is "two million, nine hundred seventy-four thousand, nine hundred eighty-one".

Divisors: 1 23 129347 2974981