61894224 has 60 divisors (see below), whose sum is σ = 197966496. Its totient is φ = 17683776.

The previous prime is 61894211. The next prime is 61894237. The reversal of 61894224 is 42249816.

It is an interprime number because it is at equal distance from previous prime (61894211) and next prime (61894237).

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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29694 + ... + 31709.

Almost surely, 2^61894224 is an apocalyptic number.

It is an amenable number.

61894224 is an abundant number, since it is smaller than the sum of its proper divisors (136072272).

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

61894224 is a wasteful number, since it uses less digits than its factorization.

61894224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61424 (or 61415 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 61894224 is about 7867.2882240325. The cubic root of 61894224 is about 395.5639522314.

The spelling of 61894224 in words is "sixty-one million, eight hundred ninety-four thousand, two hundred twenty-four".