45743778 has 48 divisors (see below), whose sum is σ = 104534976. Its totient is φ = 14988240.

The previous prime is 45743777. The next prime is 45743791. The reversal of 45743778 is 87734754.

45743778 is a `hidden beast` number, since 4 + 574 + 3 + 7 + 78 = 666.

It is not an unprimeable number, because it can be changed into a prime (45743777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28875 + ... + 30417.

It is an arithmetic number, because the mean of its divisors is an integer number (2177812).

Almost surely, 2^45743778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45743778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52267488).

45743778 is an abundant number, since it is smaller than the sum of its proper divisors (58791198).

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

45743778 is a wasteful number, since it uses less digits than its factorization.

45743778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621 (or 1609 counting only the distinct ones).

The product of its digits is 658560, while the sum is 45.

The square root of 45743778 is about 6763.4146701204. The cubic root of 45743778 is about 357.6382903461.

The spelling of 45743778 in words is "forty-five million, seven hundred forty-three thousand, seven hundred seventy-eight".