Search a number
-
+
31252874590 = 257446469637
BaseRepresentation
bin11101000110110100…
…010000010101011110
32222200001210112012201
4131012310100111132
51003001213441330
622205105322114
72154322023310
oct350664202536
988601715181
1031252874590
1112288484283
12608263633a
132c40b10202
1417269bd7b0
15c2db0aeca
hex746d1055e

31252874590 has 16 divisors (see below), whose sum is σ = 64291627872. Its totient is φ = 10715271264.

The previous prime is 31252874581. The next prime is 31252874617. The reversal of 31252874590 is 9547825213.

It is a self number, because there is not a number n which added to its sum of digits gives 31252874590.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223234749 + ... + 223234888.

It is an arithmetic number, because the mean of its divisors is an integer number (4018226742).

Almost surely, 231252874590 is an apocalyptic number.

31252874590 is an abundant number, since it is smaller than the sum of its proper divisors (33038753282).

31252874590 is a wasteful number, since it uses less digits than its factorization.

31252874590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446469651.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 31252874590 in words is "thirty-one billion, two hundred fifty-two million, eight hundred seventy-four thousand, five hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 446469637 892939274 2232348185 3125287459 4464696370 6250574918 15626437295 31252874590