122784408 has 24 divisors (see below), whose sum is σ = 332541300. Its totient is φ = 40928112.

The previous prime is 122784379. The next prime is 122784449. The reversal of 122784408 is 804487221.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852598 + ... + 852741.

Almost surely, 2^122784408 is an apocalyptic number.

122784408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

122784408 is an abundant number, since it is smaller than the sum of its proper divisors (209756892).

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

122784408 is a wasteful number, since it uses less digits than its factorization.

122784408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705351 (or 1705344 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 122784408 is about 11080.8126055809. The cubic root of 122784408 is about 497.0282497265.

The spelling of 122784408 in words is "one hundred twenty-two million, seven hundred eighty-four thousand, four hundred eight".