61892220 has 48 divisors (see below), whose sum is σ = 186631200. Its totient is φ = 15234816.

The previous prime is 61892219. The next prime is 61892221. The reversal of 61892220 is 2229816.

It is an interprime number because it is at equal distance from previous prime (61892219) and next prime (61892221).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61892221) 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, 38895 + ... + 40454.

It is an arithmetic number, because the mean of its divisors is an integer number (3888150).

Almost surely, 2^61892220 is an apocalyptic number.

61892220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61892220 is an abundant number, since it is smaller than the sum of its proper divisors (124738980).

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

61892220 is a wasteful number, since it uses less digits than its factorization.

61892220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79374 (or 79372 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 61892220 is about 7867.1608601833. The cubic root of 61892220 is about 395.5596830193.

The spelling of 61892220 in words is "sixty-one million, eight hundred ninety-two thousand, two hundred twenty".