49091280 has 80 divisors (see below), whose sum is σ = 173929344. Its totient is φ = 11220480.

The previous prime is 49091249. The next prime is 49091293. The reversal of 49091280 is 8219094.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12931 + ... + 16290.

Almost surely, 2^49091280 is an apocalyptic number.

49091280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49091280 is an abundant number, since it is smaller than the sum of its proper divisors (124838064).

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

49091280 is a wasteful number, since it uses less digits than its factorization.

49091280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29244 (or 29238 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 49091280 is about 7006.5169663678. The cubic root of 49091280 is about 366.1576555113.

The spelling of 49091280 in words is "forty-nine million, ninety-one thousand, two hundred eighty".