61192420 has 48 divisors (see below), whose sum is σ = 135209088. Its totient is φ = 23217920.

The previous prime is 61192399. The next prime is 61192447. The reversal of 61192420 is 2429116.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62535 + ... + 63505.

It is an arithmetic number, because the mean of its divisors is an integer number (2816856).

Almost surely, 2^61192420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61192420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67604544).

61192420 is an abundant number, since it is smaller than the sum of its proper divisors (74016668).

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

61192420 is a wasteful number, since it uses less digits than its factorization.

61192420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 61192420 is about 7822.5584050233. The cubic root of 61192420 is about 394.0631968509.

The spelling of 61192420 in words is "sixty-one million, one hundred ninety-two thousand, four hundred twenty".