49972220 has 36 divisors (see below), whose sum is σ = 108721704. Its totient is φ = 19293120.

The previous prime is 49972213. The next prime is 49972229. The reversal of 49972220 is 2227994.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49972229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15335 + ... + 18305.

Almost surely, 2^49972220 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 49972220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54360852).

49972220 is an abundant number, since it is smaller than the sum of its proper divisors (58749484).

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

49972220 is a wasteful number, since it uses less digits than its factorization.

49972220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038 (or 3007 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 49972220 is about 7069.1031963043. The cubic root of 49972220 is about 368.3349089609.

The spelling of 49972220 in words is "forty-nine million, nine hundred seventy-two thousand, two hundred twenty".