19772412 has 24 divisors (see below), whose sum is σ = 50330112. Its totient is φ = 5991600.

The previous prime is 19772359. The next prime is 19772429. The reversal of 19772412 is 21427791.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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, 74764 + ... + 75027.

It is an arithmetic number, because the mean of its divisors is an integer number (2097088).

Almost surely, 2^19772412 is an apocalyptic number.

19772412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19772412 is an abundant number, since it is smaller than the sum of its proper divisors (30557700).

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

19772412 is a wasteful number, since it uses less digits than its factorization.

19772412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149809 (or 149807 counting only the distinct ones).

The product of its digits is 7056, while the sum is 33.

The square root of 19772412 is about 4446.6180407136. The cubic root of 19772412 is about 270.4082165203.

The spelling of 19772412 in words is "nineteen million, seven hundred seventy-two thousand, four hundred twelve".