49897620 has 72 divisors (see below), whose sum is σ = 156977184. Its totient is φ = 13304736.

The previous prime is 49897613. The next prime is 49897643. The reversal of 49897620 is 2679894.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274 + ... + 9993.

Almost surely, 2^49897620 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 49897620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78488592).

49897620 is an abundant number, since it is smaller than the sum of its proper divisors (107079564).

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

49897620 is a wasteful number, since it uses less digits than its factorization.

49897620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10291 (or 10277 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 49897620 is about 7063.8247430128. The cubic root of 49897620 is about 368.1515306174.

The spelling of 49897620 in words is "forty-nine million, eight hundred ninety-seven thousand, six hundred twenty".