49618590 has 64 divisors (see below), whose sum is σ = 142027776. Its totient is φ = 10847232.

The previous prime is 49618589. The next prime is 49618609. The reversal of 49618590 is 9581694.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307 + ... + 9966.

It is an arithmetic number, because the mean of its divisors is an integer number (2219184).

Almost surely, 2^49618590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49618590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71013888).

49618590 is an abundant number, since it is smaller than the sum of its proper divisors (92409186).

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

49618590 is a wasteful number, since it uses less digits than its factorization.

49618590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10313.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 49618590 is about 7044.0464223343. The cubic root of 49618590 is about 367.4640068410.

The spelling of 49618590 in words is "forty-nine million, six hundred eighteen thousand, five hundred ninety".