49978126 has 32 divisors (see below), whose sum is σ = 87360768. Its totient is φ = 21215040.

The previous prime is 49978109. The next prime is 49978127. The reversal of 49978126 is 62187994.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49978127) 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, 20610 + ... + 22906.

It is an arithmetic number, because the mean of its divisors is an integer number (2730024).

Almost surely, 2^49978126 is an apocalyptic number.

49978126 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

49978126 is a deficient number, since it is larger than the sum of its proper divisors (37382642).

49978126 is a wasteful number, since it uses less digits than its factorization.

49978126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376.

The product of its digits is 217728, while the sum is 46.

The square root of 49978126 is about 7069.5209172899. The cubic root of 49978126 is about 368.3494190246.

The spelling of 49978126 in words is "forty-nine million, nine hundred seventy-eight thousand, one hundred twenty-six".