49690290 has 64 divisors (see below), whose sum is σ = 129782016. Its totient is φ = 12102912.

The previous prime is 49690261. The next prime is 49690307. The reversal of 49690290 is 9209694.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 39552 + ... + 40788.

It is an arithmetic number, because the mean of its divisors is an integer number (2027844).

Almost surely, 2^49690290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49690290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64891008).

49690290 is an abundant number, since it is smaller than the sum of its proper divisors (80091726).

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

49690290 is a wasteful number, since it uses less digits than its factorization.

49690290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 49690290 is about 7049.1339893635. The cubic root of 49690290 is about 367.6409196252.

The spelling of 49690290 in words is "forty-nine million, six hundred ninety thousand, two hundred ninety".