23249019780 has 288 divisors, whose sum is σ = 87578050560. Its totient is φ = 4871819520.

The previous prime is 23249019767. The next prime is 23249019809. The reversal of 23249019780 is 8791094232.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 726477 + ... + 757803.

Almost surely, 2^23249019780 is an apocalyptic number.

23249019780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23249019780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43789025280).

23249019780 is an abundant number, since it is smaller than the sum of its proper divisors (64329030780).

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

23249019780 is a wasteful number, since it uses less digits than its factorization.

23249019780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31399 (or 31394 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 23249019780 in words is "twenty-three billion, two hundred forty-nine million, nineteen thousand, seven hundred eighty".