49725378 has 24 divisors (see below), whose sum is σ = 108138108. Its totient is φ = 16513632.

The previous prime is 49725367. The next prime is 49725397. The reversal of 49725378 is 87352794.

49725378 is a `hidden beast` number, since 49 + 72 + 537 + 8 = 666.

49725378 is a nontrivial binomial coefficient, being equal to C(9973, 2).

It can be written as a sum of positive squares in 2 ways, for example, as 42419169 + 7306209 = 6513^2 + 2703^2 .

It is a super-2 number, since 2×49725378² = 4945226434485768, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 1 + ... + 9972.

Almost surely, 2^49725378 is an apocalyptic number.

49725378 is the 9972-nd triangular number.

49725378 is an abundant number, since it is smaller than the sum of its proper divisors (58412730).

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

49725378 is a wasteful number, since it uses less digits than its factorization.

49725378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10258 (or 10255 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 49725378 is about 7051.6223665196. The cubic root of 49725378 is about 367.7274338412.

The spelling of 49725378 in words is "forty-nine million, seven hundred twenty-five thousand, three hundred seventy-eight".