61204224 has 36 divisors (see below), whose sum is σ = 162894536. Its totient is φ = 20401152.

The previous prime is 61204189. The next prime is 61204237. The reversal of 61204224 is 42240216.

It is a self number, because there is not a number n which added to its sum of digits gives 61204224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39079 + ... + 40614.

Almost surely, 2^61204224 is an apocalyptic number.

61204224 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61204224 is an abundant number, since it is smaller than the sum of its proper divisors (101690312).

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

61204224 is an equidigital number, since it uses as much as digits as its factorization.

61204224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79712 (or 79698 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 61204224 is about 7823.3128532611. The cubic root of 61204224 is about 394.0885334471.

It can be divided in two parts, 6 and 1204224, that multiplied together give a square (7225344 = 2688²).

The spelling of 61204224 in words is "sixty-one million, two hundred four thousand, two hundred twenty-four".