49213440 has 208 divisors, whose sum is σ = 176925600. Its totient is φ = 12976128.

The previous prime is 49213427. The next prime is 49213459. The reversal of 49213440 is 4431294.

49213440 is a `hidden beast` number, since 4 + 9 + 213 + 440 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552916 + ... + 553004.

Almost surely, 2^49213440 is an apocalyptic number.

49213440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49213440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88462800).

49213440 is an abundant number, since it is smaller than the sum of its proper divisors (127712160).

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

49213440 is an equidigital number, since it uses as much as digits as its factorization.

49213440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 49213440 is about 7015.2291480749. The cubic root of 49213440 is about 366.4611226316.

The spelling of 49213440 in words is "forty-nine million, two hundred thirteen thousand, four hundred forty".