49136880 has 80 divisors (see below), whose sum is σ = 164052000. Its totient is φ = 12094464.

The previous prime is 49136863. The next prime is 49136887. The reversal of 49136880 is 8863194.

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

It is a super-2 number, since 2×49136880² = 4828865952268800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49136887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4755 + ... + 10994.

It is an arithmetic number, because the mean of its divisors is an integer number (2050650).

Almost surely, 2^49136880 is an apocalyptic number.

49136880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49136880 is an abundant number, since it is smaller than the sum of its proper divisors (114915120).

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

49136880 is a wasteful number, since it uses less digits than its factorization.

49136880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15778 (or 15772 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 49136880 is about 7009.7703243402. The cubic root of 49136880 is about 366.2709928289.

The spelling of 49136880 in words is "forty-nine million, one hundred thirty-six thousand, eight hundred eighty".