49436840 has 32 divisors (see below), whose sum is σ = 113061960. Its totient is φ = 19449600.

The previous prime is 49436839. The next prime is 49436873. The reversal of 49436840 is 4863494.

It can be written as a sum of positive squares in 4 ways, for example, as 10023556 + 39413284 = 3166^2 + 6278^2 .

It is a super-2 number, since 2×49436840² = 4888002298371200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49436794 and 49436803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7691 + ... + 12570.

Almost surely, 2^49436840 is an apocalyptic number.

49436840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49436840 is an abundant number, since it is smaller than the sum of its proper divisors (63625120).

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

49436840 is a wasteful number, since it uses less digits than its factorization.

49436840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20333 (or 20329 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 49436840 is about 7031.1336212591. The cubic root of 49436840 is about 367.0147915051.

The spelling of 49436840 in words is "forty-nine million, four hundred thirty-six thousand, eight hundred forty".