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49688401 = 72192532
BaseRepresentation
bin1011110110001…
…0111101010001
310110111102200011
42331202331101
5100210012101
64532554521
71142226100
oct275427521
9113442604
1049688401
11260586a4
1214782a41
13a3a9629
146856037
154567751
hex2f62f51

49688401 has 27 divisors (see below), whose sum is σ = 62175771. Its totient is φ = 39587184.

The previous prime is 49688383. The next prime is 49688411. The reversal of 49688401 is 10488694.

The square root of 49688401 is 7049.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 35820225 + 13868176 = 5985^2 + 3724^2 .

It is not a de Polignac number, because 49688401 - 27 = 49688273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49688411) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 937491 + ... + 937543.

Almost surely, 249688401 is an apocalyptic number.

49688401 is the 7049-th square number.

49688401 is the 3525-th centered octagonal number.

It is an amenable number.

49688401 is a deficient number, since it is larger than the sum of its proper divisors (12487370).

49688401 is an equidigital number, since it uses as much as digits as its factorization.

49688401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The cubic root of 49688401 is about 367.6362608847.

The spelling of 49688401 in words is "forty-nine million, six hundred eighty-eight thousand, four hundred one".

Divisors: 1 7 19 49 53 133 361 371 931 1007 2527 2597 2809 7049 17689 19133 19663 49343 53371 133931 137641 373597 937517 1014049 2615179 7098343 49688401