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97488490 = 251122331113
BaseRepresentation
bin1011100111110…
…00111001101010
320210102221001211
411303320321222
5144424112430
613401303334
72262432001
oct563707152
9223387054
1097488490
1150036600
1228794b4a
13172745c8
14cd39c38
15885a72a
hex5cf8e6a

97488490 has 96 divisors (see below), whose sum is σ = 209599488. Its totient is φ = 32524800.

The previous prime is 97488463. The next prime is 97488499. The reversal of 97488490 is 9488479.

It is not an unprimeable number, because it can be changed into a prime (97488499) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 862674 + ... + 862786.

It is an arithmetic number, because the mean of its divisors is an integer number (2183328).

Almost surely, 297488490 is an apocalyptic number.

97488490 is an abundant number, since it is smaller than the sum of its proper divisors (112110998).

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

97488490 is a wasteful number, since it uses less digits than its factorization.

97488490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 97488490 is about 9873.6259803580. The cubic root of 97488490 is about 460.2400920560.

Subtracting from 97488490 its reverse (9488479), we obtain a triangular number (88000011 = T13266).

The spelling of 97488490 in words is "ninety-seven million, four hundred eighty-eight thousand, four hundred ninety".

Divisors: 1 2 5 10 11 22 23 31 46 55 62 110 113 115 121 155 226 230 242 253 310 341 506 565 605 682 713 1130 1210 1243 1265 1426 1705 2486 2530 2599 2783 3410 3503 3565 3751 5198 5566 6215 7006 7130 7502 7843 12430 12995 13673 13915 15686 17515 18755 25990 27346 27830 28589 35030 37510 38533 39215 57178 68365 77066 78430 80569 86273 136730 142945 161138 172546 192665 285890 314479 385330 402845 423863 431365 628958 805690 847726 862730 886259 1572395 1772518 2119315 3144790 4238630 4431295 8862590 9748849 19497698 48744245 97488490