49221340 has 72 divisors (see below), whose sum is σ = 121357152. Its totient is φ = 16425600.

The previous prime is 49221317. The next prime is 49221353. The reversal of 49221340 is 4312294.

49221340 = 632² + 633² + ... + 736².

It is a super-2 number, since 2×49221340² = 4845480622791200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 487290 + ... + 487390.

It is an arithmetic number, because the mean of its divisors is an integer number (1685516).

Almost surely, 2^49221340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49221340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60678576).

49221340 is an abundant number, since it is smaller than the sum of its proper divisors (72135812).

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

49221340 is a wasteful number, since it uses less digits than its factorization.

49221340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 49221340 is about 7015.7921862039. The cubic root of 49221340 is about 366.4807303375.

The spelling of 49221340 in words is "forty-nine million, two hundred twenty-one thousand, three hundred forty".