61832540 has 48 divisors (see below), whose sum is σ = 161892864. Its totient is φ = 19272000.

The previous prime is 61832509. The next prime is 61832549. The reversal of 61832540 is 4523816.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61832549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18536 + ... + 21615.

It is an arithmetic number, because the mean of its divisors is an integer number (3372768).

Almost surely, 2^61832540 is an apocalyptic number.

It is an amenable number.

61832540 is an abundant number, since it is smaller than the sum of its proper divisors (100060324).

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

61832540 is a wasteful number, since it uses less digits than its factorization.

61832540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40178 (or 40176 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 61832540 is about 7863.3669633307. The cubic root of 61832540 is about 395.4325017479.

The spelling of 61832540 in words is "sixty-one million, eight hundred thirty-two thousand, five hundred forty".