Search a number
-
+
31469972 = 227867493
BaseRepresentation
bin111100000001…
…1000110010100
32012012211200112
41320003012110
531024014342
63042302152
7531330122
oct170030624
965184615
1031469972
1116844946
12a657958
13669b0b1
144272912
152b69682
hex1e03194

31469972 has 6 divisors (see below), whose sum is σ = 55072458. Its totient is φ = 15734984.

The previous prime is 31469953. The next prime is 31469987. The reversal of 31469972 is 27996413.

It can be written as a sum of positive squares in only one way, i.e., 29116816 + 2353156 = 5396^2 + 1534^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3933743 + ... + 3933750.

It is an arithmetic number, because the mean of its divisors is an integer number (9178743).

Almost surely, 231469972 is an apocalyptic number.

It is an amenable number.

31469972 is a deficient number, since it is larger than the sum of its proper divisors (23602486).

31469972 is a wasteful number, since it uses less digits than its factorization.

31469972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7867497 (or 7867495 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The square root of 31469972 is about 5609.8103354748. The cubic root of 31469972 is about 315.7175947262.

The spelling of 31469972 in words is "thirty-one million, four hundred sixty-nine thousand, nine hundred seventy-two".

Divisors: 1 2 4 7867493 15734986 31469972