49815372 has 48 divisors (see below), whose sum is σ = 124219872. Its totient is φ = 15482880.

The previous prime is 49815361. The next prime is 49815373. The reversal of 49815372 is 27351894.

It is a self number, because there is not a number n which added to its sum of digits gives 49815372.

It is not an unprimeable number, because it can be changed into a prime (49815373) 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, 21972 + ... + 24132.

It is an arithmetic number, because the mean of its divisors is an integer number (2587914).

Almost surely, 2^49815372 is an apocalyptic number.

49815372 is the 5763-rd pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49815372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62109936).

49815372 is an abundant number, since it is smaller than the sum of its proper divisors (74404500).

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

49815372 is a wasteful number, since it uses less digits than its factorization.

49815372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298 (or 2296 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 49815372 is about 7058.0005667328. Note that the first 3 decimals coincide. The cubic root of 49815372 is about 367.9491403405.

The spelling of 49815372 in words is "forty-nine million, eight hundred fifteen thousand, three hundred seventy-two".