61881192 has 32 divisors (see below), whose sum is σ = 171892800. Its totient is φ = 20626992.

The previous prime is 61881179. The next prime is 61881199. The reversal of 61881192 is 29118816.

61881192 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (61881199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143028 + ... + 143459.

It is an arithmetic number, because the mean of its divisors is an integer number (5371650).

Almost surely, 2^61881192 is an apocalyptic number.

It is an amenable number.

61881192 is an abundant number, since it is smaller than the sum of its proper divisors (110011608).

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

61881192 is a wasteful number, since it uses less digits than its factorization.

61881192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286502 (or 286492 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 61881192 is about 7866.4599407866. The cubic root of 61881192 is about 395.5361879214.

It can be divided in two parts, 618 and 81192, that added together give a triangular number (81810 = T₄₀₄).

The spelling of 61881192 in words is "sixty-one million, eight hundred eighty-one thousand, one hundred ninety-two".